Wafer boat



FIG. 1 is a front, top, left side perspective view of a wafer boat, showing our new design;

FIG. 2 is an enlarged portion view taken along line 2-2 in FIG. 1;

FIG. 3 is an enlarged portion view taken along line 3-3 in FIG. 1;

FIG. 4 is a right side view of FIG. 1; the left side view being a mirror image;

FIG. 5 is an enlarged portion view taken along line 5-5 in FIG. 4;

FIG. 6 is a top plan view of FIG. 2; and,

FIG. 7 is a bottom plan view of FIG. 2.

The broken lines shown in the drawings represent portions of the wafer boat that form no part of the claimed design. All sides not shown form no part of the claimed design. 

CLAIM The ornamental design for a wafer boat, as shown and described. 